Tortoises are reptile species of the own family testudinidae of the order testudines (the turtles). They may be particularly prominent from other turtles via being land-dwelling, while many (even though now not all) different turtle species are at least in part aquatic. Like other turtles, tortoises have a shell to protect from predation and other threats. The shell in tortoises is normally tough, and like other participants of the suborder cryptodira, they retract their necks and heads at once backwards into the shell to protect them. Tortoises are unique amongst vertebrates in that the pectoral and pelvic girdles are inside the ribcage in place of out of doors.
Tortoises can vary in dimension from a few centimeters to two meters. They're generally diurnal animals with dispositions to be crepuscular relying on the ambient temperatures. They are commonly reclusive animals. Tortoises are the longest-living land animals inside the global, although the longest-dwelling species of tortoise is a matter of debate. Galapagos tortoises are cited to stay over 150 years, but an aldabra giant tortoise named adwaita might also have lived an envisioned 255 years. In popular, maximum tortoise species can live eighty–a hundred and fifty years.
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